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| author | Paton J. Lewis <palewis@adobe.com> | 2012-10-04 17:13:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-06 03:05:00 +0900 |
| commit | 03a7beb55b9fad363f0dd33e72ccf2d3e1c2a406 (patch) | |
| tree | e89cb2a2db5645600f28699ebf3b4a98195a3fb3 /include/linux/eventpoll.h | |
| parent | a0a0a7a94c765f7219b57fa3b79389901bb0bc99 (diff) | |
| download | lwn-03a7beb55b9fad363f0dd33e72ccf2d3e1c2a406.tar.gz lwn-03a7beb55b9fad363f0dd33e72ccf2d3e1c2a406.zip | |
epoll: support for disabling items, and a self-test app
Enhanced epoll_ctl to support EPOLL_CTL_DISABLE, which disables an epoll
item. If epoll_ctl doesn't return -EBUSY in this case, it is then safe to
delete the epoll item in a multi-threaded environment. Also added a new
test_epoll self- test app to both demonstrate the need for this feature
and test it.
Signed-off-by: Paton J. Lewis <palewis@adobe.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Paul Holland <pholland@adobe.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/eventpoll.h')
| -rw-r--r-- | include/linux/eventpoll.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/eventpoll.h b/include/linux/eventpoll.h index f4bb378ccf6a..41085d0f3955 100644 --- a/include/linux/eventpoll.h +++ b/include/linux/eventpoll.h @@ -25,6 +25,7 @@ #define EPOLL_CTL_ADD 1 #define EPOLL_CTL_DEL 2 #define EPOLL_CTL_MOD 3 +#define EPOLL_CTL_DISABLE 4 /* * Request the handling of system wakeup events so as to prevent system suspends |